<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        .img-box {
            overflow: hidden;
        }

        .img-box>div {
            float: left;
        }

        /* 右侧 */
        .img-info {
            width: 60%;
        }

        /* 左侧 */
        .img1 {
            width: 40%;
            overflow: hidden;
            position: relative;
        }

        /* 撑开盒子高度 */
        .mask {
            /* 使用内填充百分比 */
            /* 内填充=width */
            width: 100%;
            padding-top: 100%;
            background-color: aqua;
        }

        /* 图片 */
        .img1 img {
            position: absolute;
            height: 100%;
            left: 0;
            top: 0;
            z-index: 1;
        }
    </style>
</head>

<body>
    <div class="img-box">
        <div class="img1">
            <div class="mask"></div>
            <img src="https://pic.to8to.com/case/2020/07/03/20200703150042-5230e769.jpeg" alt="">
        </div>
        <div class="img-info">介绍</div>
    </div>

</body>

</html>